More than 187,000 students at nearly 200 U.S. schools have experienced gun violence during school hours since the 1999 Columbine shooting. A Washington Post analysis found that there have been 10 school shootings a year since Columbine. There have already been 11 shootings in 2018.

Read the analysis:

“Scarred by school shootings,” John Woodrow Cox and Steven Rich, Washington Post